WO2022142323A1

WO2022142323A1 - Stage lamp with high-precision rotary positioning

Info

Publication number: WO2022142323A1
Application number: PCT/CN2021/109545
Authority: WO
Inventors: 蒋伟楷
Original assignee: 广州市浩洋电子股份有限公司
Priority date: 2020-12-28
Filing date: 2021-07-30
Publication date: 2022-07-07
Also published as: CN112594641A

Abstract

A stage lamp with high-precision rotary positioning. The stage lamp comprises a pivoting member and a support member, wherein the pivoting member is pivoted to the support member and comprises at least one light source (110) used for generating a lighting effect, the pivoting member is driven by a pancake motor to rotate, the pancake motor comprises a stator (400) to be energized to generate a magnetic field, and a rotor (500) sleeving on the stator and driven by the magnetic field, the pivoting member is fixedly connected to the rotor (500), the support member is fixedly connected to the stator (400), or the pivoting member is fixedly connected to the stator (400), and the support member is fixedly connected to the rotor (500). As the rotor (500) sleeves on the stator (400), the end face area is larger than that of a rotating shaft of a traditional rotating shaft motor, and the rotor cannot shake randomly. A transmission assembly is omitted, such that transmission errors are prevented, and positioning is more accurate. In addition, the stator (400) or the rotor (500) is directly connected to the pivoting member and can be used as a pivoting shaft, and no extra space is needed for mounting an electric motor. In addition, compared with a traditional rotating shaft motor, the height of the electric motor can be reduced since the rotating shaft is omitted.

Description

A high-precision rotary positioning stage light

technical field

The present invention relates to the technical field of stage lights, and more particularly, to a stage light with high precision rotational positioning.

Background technique

As an important equipment for rendering atmosphere, stage lights are widely used in various event venues. Since the projection distance of stage lights is generally 30m-50m, the rotation drive accuracy of the lamp head or arm of the stage lights is high. A slight deviation in the rotation angle will cause the final projected light spot to shift farther. At present, the drive of the head or arm of the stage light is usually driven by the motor connected to the belt, and also driven by the meshing of the gears. Because there is a gap between the belt and the gear or between the gear and the gear, and the belt and the gear may also be driven. The phenomenon of tooth skipping occurs, which leads to errors in the rotation positioning of the lamp head or arm, and cannot be positioned to the ideal position.

SUMMARY OF THE INVENTION

In order to overcome at least one of the above-mentioned defects in the prior art, the present invention provides a stage light with high-precision rotational positioning, which directly connects the pivot piece with the stator or rotor of the flat motor, saves the transmission components, and avoids the transmission process. precision error in .

In order to solve the above technical problems, the technical solution adopted in the present invention is: a stage light with high precision rotation positioning, including a pivot piece and a support piece, the pivot piece is pivotally connected to the support piece and includes at least one for A light source that generates light effects, the pivot piece is driven to rotate by a flat motor, the flat motor includes a stator that is energized to generate a magnetic field, and a rotor sleeved outside the stator and driven by the magnetic field, the pivot piece is connected to the The rotor is fixedly connected, the support member is fixedly connected to the stator, or the pivot member is fixedly connected to the stator, and the support member is fixedly connected to the rotor.

The high-precision rotary positioning stage light uses the alternating magnetic field on the stator to drive the rotor to rotate. Since the rotor is sleeved outside the stator, the end surface area is larger than that of the traditional rotary shaft motor. It is easier to be fixed with the pivoting piece or the supporting piece, and it will not shake casually, and the stability is better. In addition, because the transmission components are eliminated, transmission errors due to problems such as precision during mechanical transmission are avoided, so that the pivotal member can be positioned more accurately, and the light spot will not shift even if it is projected from a long distance. In addition, the stator or the rotor is directly connected to the pivot member, the stator or the rotor can be used as the pivot shaft of the pivot member, and no additional space is required for installing the motor, which solves the problem of the previous problem. Due to the existence of the motor, the chassis or the support arm needs to be designed thicker. In addition, the rotor sleeve is set outside the stator, compared with the traditional rotary shaft motor, the rotary shaft is eliminated, thereby reducing the height of the motor and facilitating the installation of the motor in a space with limited height.

Further, the stator includes a core column and a winding set wound outside the core column, and the rotor includes a ring body and a permanent magnet arranged on the ring body. The stator generates a magnetic field whose direction is constantly changing by changing the current direction of the winding group, thereby driving the rotor provided with the permanent magnet to rotate. The principle is similar to that of a general stepping motor.

Further, the end portion of the stator has an enlarged portion for preventing the rotor from falling off. The stator uses the enlarged portion to limit the position of the rotor, so as to prevent the rotor from sliding freely on the stator.

Further, the end of the stator is provided with an end cover to prevent the rotor from falling off. After the rotor is sleeved on the stator, the end cover is connected to the stator to limit the rotor to prevent the rotor from sliding freely on the stator.

Further, the stator and the rotor are connected by a bearing. The bearing makes the rotation of the rotor and the stator not affect each other, and the rotation is smoother.

Further, the inner side of the rotor has a protruding portion, the number of the bearings is 2, which are respectively located at the upper and lower ends of the protruding portion, and the outer ring of the bearing abuts the protruding portion. The protruding part can support the outer ring of the bearing, and the provision of two of the bearings can reduce the volume of a single bearing on the one hand, and also make the machining between the two bearings possible on the other hand. The errors cancel each other out, so that the rotor is less likely to wobble when it is fixed on the stator.

Further, the stator is provided with a through hole along the rotation center of the pivot member. Cables for transmitting signals and electric power between the pivot member and the support member can be passed through the through holes to facilitate wiring.

Further, the pivot member is a lamp head of a stage light, and the support member is a support arm of the stage light. That is, the lamp holder is driven to rotate relative to the support arm by the flat motor.

Further, both sides of the pivot member are pivotally connected, and each is driven by one of the flat motors. The two flat motors work synchronously to drive the pivot member to rotate, so the power requirement of each flat motor is lower, and the volume of the flat motor can also be smaller.

Further, the pivoting member is a stage lamp head and a support arm, and the support member is a chassis of the stage lamp. That is, the support arm is driven to rotate relative to the chassis by the flat motor.

Further, the pivot member has at least one of a beam cutting component, a pattern shaping component, a color rendering component, a focusing lens component, a light splitting component, an atomizing component, and a magnifying lens component. It realizes the cutting of the periphery of the beam, the shaping of the beam pattern, the rendering of the beam color, the adjustment of the beam focus, the fission of the beam, the uniform light of the beam, and the amplification of the beam spot.

Description of drawings

FIG. 1 is a schematic diagram of an exploded structure of a stage light for high-precision rotational positioning of the present invention.

FIG. 2 is a schematic cross-sectional structure diagram of a stage light for high-precision rotational positioning according to the present invention.

3 is a schematic longitudinal cross-sectional structural diagram of a flat motor of a stage light with high precision rotational positioning according to the present invention.

FIG. 4 is a cross-sectional structural schematic diagram of a flat motor of a stage light with high precision rotary positioning according to the present invention.

In the picture:

100, lamp holder; 110, light source; 200, support arm; 300, chassis; 400, stator; 410, stem; 411, enlarged part; 412, end cap; 413, through hole; 414, notch; 420, winding set 500, rotor; 510, ring body; 511, protruding part; 520, permanent magnet; 600, bearing.

Detailed ways

The accompanying drawings are for illustrative purposes only, and should not be construed as limitations on this patent; in order to better illustrate the present embodiment, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art It is understandable to the artisan that certain well-known structures and descriptions thereof may be omitted from the drawings. The positional relationships described in the drawings are only for exemplary illustration, and should not be construed as a limitation on the present patent.

As shown in FIG. 1 to FIG. 2, the present invention provides a high-precision rotary positioning stage light, which includes a pivot member and a support member, the pivot member is pivotally connected to the support member and includes at least one for generating light effects. The light source 110, the pivot member is driven to rotate by a flat motor, the flat motor includes a stator 400 that is energized to generate a magnetic field, and a rotor 500 sleeved outside the stator 400 and driven by the magnetic field, the pivot member and the The rotor 500 is fixedly connected, the support member is fixedly connected to the stator 400 , or the pivot member is fixedly connected to the stator 400 , and the support member is fixedly connected to the rotor 500 .

The high-precision rotary positioning stage light uses the alternating magnetic field on the stator 400 to drive the rotor 500 to rotate. Since the rotor 500 is sleeved outside the stator 400, the end surface area is relative to the traditional shaft motor. The rotating shaft is larger, it is easier to be fixed with the pivoting member or the supporting member, and it will not shake randomly, and the stability is better. In addition, because the transmission components are eliminated, transmission errors due to problems such as precision during mechanical transmission are avoided, so that the pivotal member can be positioned more accurately, and the light spot will not shift even if it is projected from a long distance. In addition, by directly connecting the stator 400 or the rotor 500 to the pivot member, the stator 400 or the rotor 500 can be used as the pivot shaft of the pivot member, and no additional space is required for installing the motor , which solves the previous problem that the chassis 300 or the support arm 200 needs to be designed thicker due to the existence of the motor. In addition, the rotor 500 is set outside the stator 400, compared with the traditional rotary shaft motor, the rotary shaft is eliminated, thereby reducing the height of the motor and facilitating the installation of the motor in a space with limited height.

When the pivot member is fixedly connected with the stator 400 and the support member is fixedly connected with the rotor 500, if the rotor 500 and the support member are kept relatively fixed together, due to the interaction of force, then The stator 400 will drive the pivot member to rotate.

1 to 4, in a preferred embodiment of the present invention, the stator 400 includes a core column 410 and a winding 420 wound outside the core column 410, and the rotor 500 includes a ring body 510 and a Permanent magnet 520 on the ring body 510 . The stator 400 generates a magnetic field with changing direction by changing the current direction of the winding group 420, thereby driving the rotor 500 provided with the permanent magnets 520 to rotate. The principle is similar to that of a general stepping motor. Wherein, the winding group 420 forms a plurality of coils opposite to the permanent magnets 520, and the permanent magnets 520 are arranged laterally and are opposite to the polarity of the coils.

In a preferred embodiment of the present invention, the end of the stator 400 has an enlarged portion 411 to prevent the rotor 500 from falling off. The stator 400 uses the enlarged portion 411 to limit the position of the rotor 500 to prevent the rotor 500 from sliding freely on the stator 400 .

In a preferred embodiment of the present invention, the end of the stator 400 is provided with an end cover 412 to prevent the rotor 500 from falling off. After the rotor 500 is sleeved on the stator 400 , the end cover 412 is connected to the stator 400 to limit the rotor 500 to prevent the rotor 500 from sliding freely on the stator 400 . The enlarged portion 411 is used for fixing at the same time, and is connected to the pivotal member or the support member through a screw passing through the enlarged portion 411 .

In this embodiment, one end of the stator 400 is provided with the enlarged portion 411 and the other end is provided with the end cover 412 .

In a preferred embodiment of the present invention, the stator 400 and the rotor 500 are connected through a bearing 600 . The bearing 600 makes the rotation of the rotor 500 and the stator 400 independent of each other, and the rotation is smoother.

In this embodiment, two ends of the inner ring of the bearing 600 abut against the enlarged portion 411 and a convex ring disposed on the rotor 500 respectively. Optionally, the protruding ring is disposed in contact with the enlarged portion 411 .

In a preferred embodiment of the present invention, the inner side of the rotor 500 has a protruding portion 511 , the number of the bearings 600 is 2, which are located at the upper and lower ends of the protruding portion 511 respectively, and the outer side of the bearing 600 is The ring abuts against the protruding portion 511 . The protruding part 511 can support the outer ring of the bearing 600, and two bearings 600 are provided, on the one hand, the volume of a single bearing 600 can be reduced, and on the other hand, two bearings 600 can be used. The machining errors between 600 cancel each other, so that the rotor 500 is less likely to shake when being fixed on the stator 400 .

In a preferred embodiment of the present invention, the stator 400 is provided with a through hole 413 along the rotation center of the pivot member. Cables for transmitting signals and electric power between the pivot member and the support member can be passed through the through holes 413 to facilitate wiring.

At this time, the end of the enlarged portion 411 provided at the end of the stator 400 to prevent the rotor 500 from falling off has a notch 414 for outlet.

Optionally, the end cover 412 is provided with a through hole corresponding to the through hole 413 for wiring.

Optionally, the side wall of one end of the through hole away from the stator 400 is arc-shaped, so as to avoid friction and cutting the cable.

In a preferred embodiment of the present invention, the pivot member is the lamp head 100 of the stage light, and the support member is the support arm 200 of the stage light. That is, the lamp holder 100 is driven to rotate relative to the support arm 200 by the flat motor. At this time, the pivot member is fixedly connected to the stator 400 , and the support member is fixedly connected to the rotor 500 .

In a preferred embodiment of the present invention, both sides of the pivot member are pivotally connected, and each is driven by one of the flat motors. The two flat motors work synchronously to drive the pivot member to rotate, so the power requirement of each flat motor is lower, and the volume of the flat motor can also be smaller.

In a preferred embodiment of the present invention, the pivoting member is a stage lamp head 100 and a support arm 200 , and the support member is a stage lamp housing 300 . That is, the support arm 200 is driven by the flat motor to rotate relative to the chassis 300 . At this time, the pivot member is fixedly connected to the rotor 500 , and the support member is fixedly connected to the stator 400 .

Generally speaking, the lamp head 100 of the stage light is pivotally connected to the support arm 200 to rotate around the first dimension, and the support arm 200 is pivotally connected to the chassis 300 to rotate around the second dimension, both of which together realize the lamp head. 100 gimbal rotation.

In a preferred embodiment of the present invention, the pivot member has at least one of a beam cutting component, a pattern shaping component, a color rendering component, a focusing lens component, a light splitting component, an atomizing component, and a magnifying lens component. It realizes the cutting of the periphery of the beam, the shaping of the beam pattern, the rendering of the beam color, the adjustment of the beam focus, the fission of the beam, the uniform light of the beam, and the amplification of the beam spot.

Obviously, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the embodiments of the present invention. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. There is no need and cannot be exhaustive of all implementations here. Any modifications, equivalent replacements and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

A high-precision rotary positioning stage light, characterized by comprising a pivot piece and a support piece, the pivot piece being pivotally connected to the support piece and comprising at least one light source (110) for generating light effects, the The pivot member is driven to rotate by a flat motor, and the flat motor includes a stator (400) that is energized to generate a magnetic field, and a rotor (500) sleeved outside the stator (400) and driven by the magnetic field. The rotor (500) is fixedly connected, the support member is fixedly connected to the stator (400), or the pivot member is fixedly connected to the stator (400), and the support member is fixedly connected to the rotor (500) Fixed connection.
The high-precision rotary positioning stage light according to claim 1, wherein the stator (400) comprises a core column (410) and a winding group (420) wound outside the core column (410), The rotor (500) includes a ring body (510) and a permanent magnet (520) arranged on the ring body (510).
The high-precision rotary positioning stage light according to claim 1, characterized in that, the end of the stator (400) has an enlarged portion (411) that prevents the rotor (500) from falling off.
The high-precision rotary positioning stage light according to claim 1, characterized in that, an end cover (412) for preventing the rotor (500) from falling off is provided at the end of the stator (400).
The high-precision rotary positioning stage light according to claim 1, characterized in that, the stator (400) and the rotor (500) are connected through a bearing (600).
The high-precision rotary positioning stage light according to claim 5, characterized in that, the inner side of the rotor (500) has a protruding part (511), and the number of the bearings (600) is 2, which are respectively located in the The upper and lower ends of the protruding part (511), and the outer ring of the bearing (600) abuts the protruding part (511).
The high-precision rotary positioning stage light according to claim 1, characterized in that, a through hole (413) is provided through the stator (400) along the rotation center of the pivot member.
The high-precision rotary positioning stage light according to claim 1, characterized in that, the pivot member is a lamp head (100) of the stage light, and the support member is a support arm (200) of the stage light.
The high-precision rotary positioning stage light according to claim 8, wherein both sides of the pivot member are pivotally connected, and each is driven by one of the flat motors.
The high-precision rotary positioning stage light according to claim 1, characterized in that, the pivot member is a stage light lamp head (100) and a support arm (200), and the support member is a stage light case (300) .
The high-precision rotary positioning stage light according to claim 1, wherein the pivot member at least has a beam cutting component, a pattern shaping component, a color rendering component, a focusing lens component, a light splitting component, and an atomizing component. , One of the magnifying lens assemblies.